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Annual Fwp Drought Summary 2004

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Annual Fwp Drought Summary 2004 ANNUAL FWP DROUGHT SUMMARY 2004 Prepared for: Governor’s Drought Advisory Committee Submitted by: Montana Fish, Wildlife & Parks January 2005 TABLE OF CONTENTS Page I. INTRODUCTION ...............................................................................................................1 II. FWP DROUGHT ASSESSMENT AND RESPONSE ACTIVITIES............................... 1 Region 1 2 Region 2 3 Region 3 4 Region 4 7 Region 5 11 Region 6 13 Region 7 16 III. FWP DROUGHT MANAGEMENT OBJECTIVES, 2004 ..............................................18 IV. FWP ACTIONS TAKEN TO MITIGATE DROUGHT IMPACTS .................................18 V. SUCCESSES AND CHALLENGES.................................................................................20 I. INTRODUCTION This Report is provided in fulfillment of the annual reporting requirement of the 1995 Montana Drought Response Plan. The specifics of the annual reporting requirement can be found in Chapter IV (Drought Monitoring) of the Plan, on page 14. The entire Plan is available online at http://nris.state.mt.us/drought/committee/DroughtP.pdf. This report is Montana Fish, Wildlife and Parks’ “participating agency” annual report for 2004 to the Governor’s Drought Advisory Committee. It is not the intent of this report to repeat any of the specific climatic data and reporting presented to the Committee in 2004 by other participating agencies. That information continues to be available on the Committee’s website at http://nris.state.mt.us/drought/committee/meeting.html. This Report focuses on FWP’s analysis of local drought conditions and responses to those conditions. II. FWP DROUGHT ASSESSMENT AND RESPONSE ACTIVITIES FWP’s drought response is best divided into: (1) ongoing activities (i.e., relevant activities we do on a regular basis, whether drought conditions exist or not), and (2) emergency response under drought conditions. These types of assessment and response activities are described below for 2004. Regular and Ongoing Assessment and Response Activities There are many activities that FWP administrators and field staff conduct to regularly assess the relationships between climatic/hydrologic conditions and habitat, whether such conditions are overly dry, overly wet, or near normal. These include: • Checking snowpack and precipitation reports and forecasts to help determine what the needs and issues of the upcoming seasons will be, both for Montana’s fish, wildlife and recreational resources, as well as to the local communities and businesses associated with those resources. • Tracking streamflow and water temperature conditions in Montana’s priority streams and tributaries to determine relative conditions for fish and wildlife, and recreational activities, dependent on certain flow minimums, maximums, pulses, or timing. • Observing in the field and noting anecdotal information regarding actual species’ (including human!) response to changing moisture conditions; e.g., location of bull trout relative to flows and/or water temperatures in a stream, reported groundwater conditions (e.g., flows from springs and wells), comments from canoeists of Smith River conditions, or movement of deer and elk into or away from irrigated pastures. • Communicating within divisions, with local communities, and with businesses to respond appropriately to impacts of unusual moisture conditions in a consistent and science-based manner. • Participating in ongoing policy, planning, and informational efforts related to how the fish, wildlife, and recreational resources of Montana – and the habitats critical to these resources – are perceived, managed, and allocated, both now and in the future. 1 • Increasing the scientific understanding of the relationships between fish, wildlife, and recreation resources and climatic conditions, and working to make that information available and usable to decision-makers at various levels. Examples include: field determination of appropriate instream flows for various fish species, participating in development of water quality restoration or drought management plans at the local level, sponsoring research into specific factors (e.g., whirling disease) affecting species capability to withstand climate-related stresses, etc. • Funding (through grant programs or direct expenditures) and conducting specific long-term projects to increase Montana’s capability to sustain dry climatic conditions while also maintaining habitat quality, resource productivity, and management flexibility. Examples include: stream restoration grants, streamflow restoration through instream flow leasing, conservation easements to meet habitat and landowner objectives, native species conservation and restoration, coordination with DNRC on water allocation policy and issues, etc. Specific Fisheries Assessment and Response Activities in 2004 Under drought conditions and with limited resources, FWP’s efforts in long-term drought susceptibility reduction shift to a more short-term assessment and response mode, based on the severity of the situation and the needs it creates. While some areas of Montana saw relief this past year, drought impacts to fisheries may not be evident until several years after the low flow events. Effects can include missing age/size classes, reduced growth rates, reduced fish densities, poor fish condition (e.g. parasitism), etc. A summary of FWP’s specific assessment and response activities by Region for year 2004 follows. The monthly drought updates provided by FWP to the Committee that are the basis for this summary can be found at http://fwp.state.mt.us/drought/default.asp under the heading Regional Drought Reports. REGION 1 – KALISPELL Snowpacks in northwest Montana were approaching average levels in early January, and then precipitation basically stalled. Some early warm weather started snowmelt early and due to the dry soils much of the early melt went into the ground. As a result streamflows stayed below average in the spring. Peak flows occurred about 3-4 weeks early. Continued below normal precipitation couple with the early snowmelt depressed streamflows until precipitation improved dramatically in August and September. Some of the higher elevation sites recorded record- breaking rainfall of 10" to 12" in a short period in late August. This caused streams to flow 2-3 times normal for a while and some streamflows were running about 125% of median in early October. The late rains helped restore some ground moisture improving the outlook for next year. LAKES AND RESERVOIRS Both Flathead Lake and Hungry Horse reservoir filled completely while Lake Koocanusa only filled to within 10 feet of normal full pool. Even with conservative spring releases Ashley Lake only filled to within 1.5 feet or 75 percent of full. On the Little Bitterroot River, Hubbart Reseroir was completely drained due to a combination of drought conditions and a need for a dam safety inspection. The FWP Commission lifted limits to allow anglers to salvage as many rainbows and kokanee as possible. Upstream, Little Bitteroot Lake remains low causing added 2 concern for the Little Bitterroot basin next year as water demand to refill these two reservoirs will be greater than normal. A blue-green algae bloom started to form on Lake Mary Ronan in July but dissipated due to a cold front. There was a minor fish kill in Noxon Rapids Reservoir due to low flows. Hatchery production has been low at several state fish hatcheries that depend on spring flows. This has shown up in reduced plants to some waters that will show a dip in fishing opportunity as a result. POTHOLE LAKES Many pothole lakes are down 5 to 10 feet due to low groundwater. Cliff Lake northwest of Kalispell winterkilled in 2003-2004 and several lakes are at risk this winter due to low lake levels. Whether or not fish kills occur depends on the severity of the winter. STREAMS AND RIVERS In August FWP issued a voluntary restriction asking anglers to not fish the Thompson River from noon on as flows dropped to about 2/3 normal and water temperatures climbed into the 70's. Even with drought conditions greatly abated in Region 1, future impacts will continue to be observed in poor trout reproduction in streams due to poor spawning and rearing conditions. This will show up for several years as weak year classes. However, Bull trout runs were generally good this fall due to improved streamflows. REGION 2 - MISSOULA As in Region 1, Region 2 entered 2004 with a fairly positive drought outlook that quickly deteriorated in late winter and into spring and then improved considerably in the late summer. In July drought conditions and streamflows began to improve but were dependent on week-to- week weather. By September, drought concerns had been alleviated at least for the short-term. However, concern remains for next year particularly in the Upper Clark Fork basin due to the continuing hydrologic drought. BLACKFOOT RIVER By mid-summer flows in the Blackfoot River were better than expected. The cool, wet weather allowed many producers to irrigate for a second cutting. Even with better than expected streamflows on August 14th, FWP issued voluntary, morning only fishing recommendations on the Blackfoot River and voluntary, no fishing recommendations on the Blackfoot River’s bull trout tributaries. This was in response to the Blackfoot Drought Plan that calls for voluntary angling restrictions when flows reach 600 cfs at Bonner. Under the plan, irrigators cut back on water taken from the rivers and streams in order to maintain higher flows. Fortunately, temperatures
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